Magda Korzewska Yes it is quite difficult but you have done it perfectly.
Michael Gatton For me it's near impossible, even with a tripod, to get it perfect - there are three axes that have to be aligned simultaneously and the slightest twitch throws everything off. I get as close as I can in camera then lightroom or photoshop to finish it off.
Grace @magda I kept forgetting until today I was going to try take an "en face" photo! Find it really hard to get all the lines straight